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Randy.Dunlap writes: > On Mon, 5 Aug 2002, Randy.Dunlap wrote: >> Albert, your graph shows that the triple-indirect limit is >> at 8 EB, right? No, that's the API limit. We use signed 64-bit byte offsets in our API. (it's just under 8 EiB, which is about 9.2 EB) I do see one flaw on my graph. That horizontal line at 1 TiB ought to be at 2 TiB apparently. It's for the kernel limit, perhaps only on 32-bit hardware. This changes the limit with 4096-byte blocks from 1 TiB to 2 TiB, so the filesystem's 4.4 TB is still out of reach. > Yes, but your text (email) explanation puts it at around > 4.4 TB. Got it. If we had quadruple indirection, then we'd hit a 17.6 TB limit (16 TiB) due to the 32-bit block numbers. With an 8192-byte block size, we'd hit the block number limit at 35 TB (32 TiB) before hitting the triple-indirection limit. Of course none of this gets you past the kernel limit at around 2.2 TB. I believe we allow 8192-byte blocks on the Alpha. You might want to look into that. IA-64 maybe too. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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